Lead Developer
Hmm, if you don’t want to use your own images you upload, you’ll need to remove the function that adds the post image and write your own in order to display the image from an external resource (frowned upon in almost all scenarios, especially the websites you’re linking the image from).
You could also simply set your blog content to show the full post – you don’t have huge posts, so it would almost work the same.
If neither of those are do-able, and you don’t want to set a featured image yet want one to show up, you may have to go with another theme (I would refund you for Premium of course).
Sorry I can’t be more helpful, there’s just not too many options.